Loading patent…
AssigneeABB Research Ltd.
InventorsFelix Greuter, Michael Hagemeister, Wolfgang Kluge
Estimating the term…
The method is used to produce a varistor which has a cylindrical resistance body (1) made from a material based on metal oxide, and two electrodes (2, 3) which are each arranged on one of two mutually parallel end faces of the cylindrical resistance body (1). In a first method step, a layer of electrode material is applied to both end faces, as far as their outer boundary (9), which is designed as a sharp edge. In a -second method step, a circular ring (4), which is delimited by the outer boundary (9), runs to as far as the end face of the resistance body (1) and has a width of from approx. 10 to 500 μm, is removed from the electrode, or the resistance body (1) and electrode are beveled (5′) at the outer boundary. The method allows simple and economic manufacture of a varistor.
A method for producing a varistor capable of withstanding at least one high-power current pulse of defined amplitude, form and duration in an electric field of predetermined magnitude, the varistor comprising a cylindrical resistance body made from a material which is based on metal oxide, and two electrodes each arranged on one of two mutually parallel end faces of the cylindrical resistance body, the method comprising the steps of:
A method for producing a varistor capable of withstanding at least one high-power current pulse of defined amplitude, form and duration in an electric field of predetermined magnitude, the varistor comprising a cylindrical resistance body made from a material which is based on metal oxide, and two electrodes each arranged on one of two mutually parallel end faces of the cylindrical resistance body, the method comprising the steps of:
Dependencies are inferred from the claim text.